Air brush or spraying device



June 15 1926. 1,588,756

c. c. LEIGH AIR BRUSH OR SPRAYING DEVICE Filed July l5. 1925 J |NVENTOR:Marl@ Y @v Patented June 15, 1926.

UNITED STATES CHARLES C. LEIGH, OF PHILADELPHIA, PENNSYLVANIA.

AIR BRUSH 0B SPRAYING DEVICE.

Application filed July 15, 1925. Serial No. 43,663.

My invention consists of a novel. construction-of spraying device forspraying palnt, pigment, or othermaterial in a finely atom- -1zedcondition upon any surface desired to be painted or decorated, myinvention, however being particularly adapted to the spraying of paintor pigment upon glass, pottery, or similar surfaces.

In carrying out my invention I provide a suitable receptacle with athreaded cap upon which is supported a commingling tube and its adjunctswhereby the compressed air and pigment can be quickly and effectivelycommingled, means being provided for regulating the quantity ofcompressed air admitted and for also regulating the amount of thecommingled compressed air and pigment discharged through the outlet portof `the sprayinO device.

It further consists of a novel manner of mounting the spraying andcontrolling device with respect to a suitable receptacle.

It further consists of novel means for asselnbling the controllingdevices for the compressed air supply and the spraying device, wherebythe various parts can be readily assembled or dismantled for the purposeof Yinspection or'repairs Without requiring the aid of skilled labor.

It further lconsists of a novel manner of positioning a handle withrespect to the receptacle and the compressed air device and the sprayingdevice, whereby the various parts will be nicely balanced and .can bereadily conveyed to an desired point. p

It further consists oty other novel features of advantage andconstruction, all as will be hereinafter fully pointed out in thespecification an'd claims.

For the purpose of illustrating my invention I have shown in theaccompanying drawings forms thereof which' are at present preferred byme, sincethe same have been found in practice to give satisfactory andreliable results, although it is to be understood that the variousinstrumentalities of which m invention consists can be variously arrangeandorganized and that my invention is not limited tothe precisearrangement and organization of these instrumentalities as herein shownand described.

Figure 1 :represents a side velevation of a novel spraying device,embodying my invention. i

Figure 2 represents a vertical sectional view of Figure 1, certain ofthe parts being shown in elevation.

Figure 3 represents a detail view showing the manner of connecting thevalve stem andv flexible member which controll the outlet nozzle of thespraying device.

Figure 4 represents a plan view of the1 right hand portion of the valvestem seen in Flgure 2, showing the slotted and ianged portion thereof.

Figure 5 represents a view in detail to be hereinafter referred to.

Similar numerals of reference indicate corresponding parts in thefigures. Referring to the drawings 1 designates a receptacle which maybe of metal or other suitable material, but pref' erably of metal, andprovided with a window` 2, so that the depth of the paint, pi ent orother material contained within said receptacle may be readily visuallyascertained. The top of the rece tacle 1 is screw threaded to Areceive ascrew t ireaded cap 3 which carries a vertically dis osed bracket 4which supports a longitu inally extended outer cmmingling Itube 5, whichis secured with respect to the bracket 4 by means of a screw 6. The tube5 is' provided with-a union 7, and the cap 3 is provided with avertically disposed pendant tube 8 which projects within the paint orpigment 32 to within a short distance of the bottom of the receptacle 1.

VConnecting the tube 8 and union 7 is a short pipe section 9 which hasscrew threaded relation with the socket 10 of the cap 3 and which isconnected with respect to the union 7 by a nut 11 or its equivalent. Oneend of the tube 5 is provided with a spraying dcvice 12 which ispreferably flexible and is adapted to be manipulated uring the spray ingoperation. The spraying device 12 has a ball and socket connection as at13, with thetube 5 and is provided with the nozzle 14 which is referabldetachably connected to the tubu ar mem er 12. The opposite end of thetube .5 is provided with a hollow handle 15 adapted for detachableconnection with a source of compressed air, (not shown). The upper endof the handle y15 is provided with a short section of pipe 16 movablevertically through which is a needle valve 17, operable by a handle 18which has pivotal connection as at 19 with an extension 2O detachablyconnected with and carried by the tube 5, the upper end of the pipe 16forming a valve seat for the valve 17. Extending longitudinally throughthe tube 5 is a stem 21 slotted as at 22 through which passes the needlevalve 17. The opposite end ot' the stern 21 is provided with a llexibleconnection 23 which carries at its outer end a needle valve 24, whichflexible connection 23 and valve stem 21 is under tension by reason ofthe sprin 25, bearing against the flange 31, and may e adjusted withrespect to the outlet port of the nozzle 14 by means of the thumb screw26. The tube 5 is provided with a handle 27 whereby the entire devicemay be transported from place to place.

In operation the paint, pigment, or equivalent material 32 is caused tobe Withdrawn from the receptacle 1, through the pipe 8 to the pipe 5 andflows around the valve stem 21 and the flexible connection 23, throughthe outlet opening 33 of the nozzle 14. Compressed air is admittedvthrough connection 28, through hollow handle l5 and connection 16 topipe 5 when the handle 18 is actuated to compress the sprin@r 29 andlift the needle valve 17 from its seat in the connection 16. Thecompressed air llowing through the pipe 8 and connection 9, sucks upsuilicient paint, pigment or other material from the receptacle 1 tocause an admixture of compressed air, and the paint or pigment in anatomized condition has its egress through the outlet. port 33 of thenozzle 14 in the. form o't' a spray. By adjusting the,nut 26 upon thescrew threaded end 3() ot' the valve stem 21, the desired adjustment ofthe needle valve 24 with respect to the outlet 33 may be secured toprovide a proper admixture ot the pigment and compressed air which isreadily directed upon the desired point by reason of the universal jointconnection 13.

The rod or valve stein 21 may be provided with a guide head 34 of lessdiameter than the bore of the tube 5. The nut 35 can be readily adjustedonthe threaded end 36 ot` the valve 17, so as to adjust the throw ot'said valve.

It will be apparent that by reason of the threaded connections seen inFigures 2, and 5, that the valvular member 24, as well as the parts 21and 23 can be readily asseinbled or disconnected, and the tubular member12 can be readily disconnected from the tubular member 5 by means of thecoupling nut 37. The nut 11 permits the ready disconnectionv of the tube5 from the parts'S, 9, and 10, andby loosening the fastening devices 6and 19, the various parts can be readily dismantled according torequirements. The threaded head 38 into which the valvular member 24 isscrewed has its bearing within the nozzle 14 and is readily reciprocatedand guided therein, as is evident, said head being smaller than the boreof the nozzle, so as to permit the ready discharge of the commingledcompressed air and pigment through the outlet port 33 of the nozzle 1-1.

Having thus described my invention What I claim as new and desire tosecure by Letters Patent, is

1. In a s raying device a receptacle, a cover there or, a substantiallyhorizontally extending tube mounted on said cover, a pendant tubeextending therefrom to the interior of said receptacle, a universaljoint in said horizontal tube, an outlet connection carried by saiduniversal joint, a spraying nozzle in said outlet connection, a valvularmember for controlling the outlet in said spraying nozzle, ahorizontally disposed valve stem positioned in said horizontalv tube,and having a flexible connection to said valvular member in saidspraying nozzle, a compressed air inlet, a valvular member controllingthe compressed air inlet and passing through a slot in said valve stem,means for actuating and controllin the compressed air valve and meansfor adjusting the movement of said ail` valve.

2. ln a spraying device, a receptacle, a cap therefor, a substantiallyhorizontally disposed tube mounted on said cap, a pipe dependingtherefrom into said ieceptacle, a spraying nozzle on an extension ofsaid tube, a compressed air supply at the other end of said tube, ahandle member through which said air passes, means for controlling theflow of said compressed air, a universal joint intermediate said nozzleand tube, and means for regulating the outlet area of the sprayingnozzle, said regulating means forthe spraying c,nozzle being located inproximity to the compressed air controlling device.

1n a spraying device, a receptacle, a rover therefor, a substantiallyhorizontally extending tube mounted on said cover, a pendant tubeextending therefrom to the interior of said receptacle, a universaljoint in said horizontal tube, an outlet connection carried by saiduniversal joint, a. spraying nozzle for said outlet connection, avalvular member for controlling the outlet in said spraying nozzle, ahorizontally disposed valve stem positioned in saidhorizontal tube, andhaving a flexible connection to said valvular member in said sprayingnozzle, a compressed air inlet, a handle through which the compressedair passes, a valvular member vertically disposed and controlling thecompressed air inlet and passing through a slot in said valve stem,means for actuating and controlling the compressed air valve and meansfor adjusting the movement of said air valve with res ect to its seat.

HARLES C. LEIGH.

